Alright, we're getting a crash at server start (but not client side) that causes a crash, at first we thought it was another mod we were having trouble with, but after removing that mod the error happened again and we tracked it down to the latest version of Thaumic Bases (Because I clearly can't read error reports worth a damn. Don't judge me >.>)

Crash Report: http://pastebin.com/cnQhH6z7

Already fixed in 34ce428
Untill the version is released use the server-side fix in the Releases section here, on github.

Awesome, thanks for the quick response!